ESP8266-12F is an enhanced version ESP8266-12, improve peripheral
circuit, four-plate board technology, enhance impedance matching,
the signal output is better, whether it is stable or anti-jamming
capability, PCB antenna through professional testing laboratory, a
perfect match, after ROHS certification, have been greatly
improved!

Competitive Advantages:

1. Convenient & Friendly Customer Service.

2. Low Prices Direct From Factory Suppliers.3. Fast Delivery Around the World.4. High Quality With Global Standards.5. 1 Year Factory Warranty.6. Safe Shipping Way and Payment.

FAQ:

1. What is the delivery time?

Normally, 1-5 workdays after payment;

Special requirement orders, delivery time is negotiable.

2.If the products can’t work after receiving it,what should I do?

We will replace new items for you at once, and respect your final
decision for wrong goods.

3.If the products don’t meet my demand after I received it,can I
return it?